CVE-2026-20123
CVE-2026-20123 is a medium-severity vulnerability in Cisco Evolved Programmable Network Manager with a CVSS 3.x base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-601.
Key facts
- Severity: Medium (CVSS 3.x base score 4.3)
- EPSS exploit prediction: 0% (8th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-5424
- Weakness: CWE-601
- Affected product: Cisco Evolved Programmable Network Manager
- Published:
- Last modified:
Description
A vulnerability in the web-based management interface of Cisco Evolved Programmable Network Manager (EPNM) and Cisco Prime Infrastructure could allow an unauthenticated, remote attacker to redirect a user to a malicious web page. This vulnerability is due to improper input validation of the parameters in the HTTP request. An attacker could exploit this vulnerability by intercepting and modifying an HTTP request from a user. A successful exploit could allow the attacker to redirect the user to a malicious web page.
Frequently asked questions
- What is CVE-2026-20123?
- A vulnerability in the web-based management interface of Cisco Evolved Programmable Network Manager (EPNM) and Cisco Prime Infrastructure could allow an unauthenticated, remote attacker to redirect a user to a malicious web page. This vulnerability is due to improper input validation of the parameters in the HTTP request. An attacker could exploit this vulnerability by intercepting and modifying an HTTP request from a user. A successful exploit could allow the attacker to redirect the user to a malicious web page.
- How severe is CVE-2026-20123?
- CVE-2026-20123 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.
- Is CVE-2026-20123 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-20123?
- CVE-2026-20123 primarily affects Cisco Evolved Programmable Network Manager. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2026-20123?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2026-20123 have an EU (EUVD) identifier?
- Yes. CVE-2026-20123 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-5424.
- When was CVE-2026-20123 published?
- CVE-2026-20123 was published on 2026-02-04 and last updated on 2026-06-29.
References
Affected products (4)
- cpe:2.3:a:cisco:evolved_programmable_network_manager:*:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:prime_infrastructure:*:-:*:*:*:*:*:*
- cpe:2.3:a:cisco:prime_infrastructure:3.10.6:-:*:*:*:*:*:*
- cpe:2.3:a:cisco:prime_infrastructure:3.10.6:security_update_01:*:*:*:*:*:*
More vulnerabilities in Cisco Evolved Programmable Network Manager
- CVE-2021-44228 — Critical (CVSS 10.0): Apache Log4j2 2.0-beta9 through 2.15.0 (excluding security releases 2.12.2, 2.12.3, and 2.3.1) JNDI features used in…
- CVE-2019-15958 — Critical (CVSS 9.8): A vulnerability in the REST API of Cisco Prime Infrastructure (PI) and Cisco Evolved Programmable Network Manager…
- CVE-2016-1289 — Critical (CVSS 9.8): The API in Cisco Prime Infrastructure 1.2 through 3.0 and Evolved Programmable Network Manager (EPNM) 1.2 allows remote…
- CVE-2016-1291 — Critical (CVSS 9.8): Cisco Prime Infrastructure 1.2.0 through 2.2(2) and Cisco Evolved Programmable Network Manager (EPNM) 1.2 allow remote…
- CVE-2021-1487 — High (CVSS 8.8): A vulnerability in the web-based management interface of Cisco Prime Infrastructure and Evolved Programmable Network…
- CVE-2019-1823 — High (CVSS 8.8): A vulnerability in the web-based management interface of Cisco Prime Infrastructure (PI) and Cisco Evolved Programmable…
All CVEs affecting Cisco Evolved Programmable Network Manager →
Other CWE-601 (Open Redirect) vulnerabilities
- CVE-2018-3774 — Critical (CVSS 10.0): Incorrect parsing in url-parse <1.4.3 returns wrong hostname which leads to multiple vulnerabilities such as SSRF, Open…
- CVE-2019-25282 — Critical (CVSS 9.8): V-SOL GPON/EPON OLT Platform v2.03 contains an open redirect vulnerability in the script that allows attackers to…
- CVE-2020-36912 — Critical (CVSS 9.8): Plexus anblick Digital Signage Management 3.1.13 contains an open redirect vulnerability in the 'PantallaLogin' script…
- CVE-2025-43526 — Critical (CVSS 9.8): This issue was addressed with improved URL validation. This issue is fixed in Safari 26.2, macOS Tahoe 26.2. On a Mac…
- CVE-2025-55031 — Critical (CVSS 9.8): Malicious pages could use Firefox for iOS to pass FIDO: links to the OS and trigger the hybrid passkey transport. An…
- CVE-2024-22891 — Critical (CVSS 9.8): Nteract v.0.28.0 was discovered to contain a remote code execution (RCE) vulnerability via the Markdown link.